app.py

#!/usr/bin/env python
# coding: utf-8

import tornado.ioloop
import tornado.options
from tornado.web import Application
from settings import *

def make_app(routers, **kwargs):
    class ExtApplication(Application):
        def __init__(self, routers, **kwargs):
            self.redisConn = None
            postRouters = []
            for urlSpec in routers:
                if urlSpec.name in enableList:
                    postRouters.append(urlSpec)
            super(ExtApplication, self).__init__(postRouters, **kwargs)
        def getRedisConn(self):
            try:
                import tornadoredis
                if self.redisConn is None:
                    redisConn = tornadoredis.Client(host=redis["host"], port=redis["port"], selected_db=redis["db"])
                    redisConn.connect()
                    self.redisConn = redisConn
                return self.redisConn
            except:
                print("can not connect to redis.")
                self.redisConn = None
        def getSMTPConn(self):
            try:
                import smtplib
                smtp = smtplib.SMTP()
                smtp.connect(mail["smtpServer"], mail["smtpPort"])
                # smtp.starttls()
                smtp.login(mail["username"], mail["password"])
                return smtp
            except Exception:
                if smtp:
                    smtp.close()
                raise

    return ExtApplication(routers, **kwargs)

if __name__ == "__main__":
    tornado.options.define(name='port', default=port, type=int, help='given a http listen port')
    tornado.options.parse_command_line()
    app = make_app(routers, **appSettings)
    app.listen(tornado.options.options.port, address=address)
    tornado.ioloop.IOLoop.current().start()